Area of Plane figures

What is the formula in finding the area of a circle?

• $A\ =\ \pi r^2$

• $A=\ l\ x\ w$

• $A\ =\ \frac{1}{2}\left(bxh\right)$

• $A=\ s^2$

Tags

CCSS.7.G.B.4

What is the formula in finding the area of a triangle?

• $A\ =\ \pi r^2$

• $A=\ l\ x\ w$

• $A\ =\ \frac{1}{2}\left(bxh\right)$

• $A=\ s^2$

Tags

CCSS.6.G.A.1

What is the formula in finding the area of a square?

• $A\ =\ \pi r^2$

• $A=\ l\ x\ w$

• $A\ =\ \frac{1}{2}\left(bxh\right)$

• $A=\ s^2$

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the formula in finding the area of semi-circle?

•  $A\ =\ \frac{1}{2}\ \left(\pi r^2\right)$  

• $A=\ l\ x\ w$

• $A\ =\ \frac{1}{2}\left(bxh\right)$

• $A=\ s^2$

Tags

CCSS.7.G.B.4

What is the formula in finding the area of a rectangle?

• $A\ =\ \pi r^2$

• $A=\ l\ x\ w$

• $A\ =\ \frac{1}{2}\left(bxh\right)$

• $A=\ s^2$

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3